The most effective way to ensure product safety in logistics, transportation, and warehousing processes is to use the right security seals. Especially in international shipments and the transportation of valuable commodities, Lima Seals, Strap Seals, and Fixed Distance Seals offer different solutions for every need. In this article, we will examine in detail which seal is more suitable for your logistics operations.
Lima Seals: High Security and Durability
Generally classified as "High Security Seal," Lima seals are one of the most frequently preferred seal types on containers and truck doors. The biggest feature of these seals is their extreme resistance to physical tampering.
Areas of Use: Customs clearance, international maritime transport, and railway wagons.
Advantage: Impossible to open without special cutters. Their laser-engraved numbers maximize traceability.
Strap Seals (Adjustable Seals)
Strap seals, also known as "pull-tight" seals in the logistics world, have a very wide range of uses thanks to their flexible structure. Similar to a cable tie, these seals can be adjusted according to the width of the area where they are applied thanks to their compressible mechanism.
Application Areas: Sacks, pharmaceutical warehouses, fire extinguishers, airline catering carts, and cargo packages.
Technical Structure: They are made of polypropylene or nylon material. They provide "tamper evident" by sustaining irreversible damage when tampered with.
Fixed Distance Seals
Unlike strap seals, fixed distance seals have a non-compressible structure. When the seal is closed, it creates a specific loop distance. This distance is fixed and allows the product to move while maintaining its security.
Application Areas: Especially tarpaulin-covered trucks, warehouse doors, and wagon covers.
Why are they preferred? Fixed length reduces the load on the seal's locking mechanism and makes it easier to understand where and how the seal broke in case of tampering. They are usually produced with a metal strip or polymer body.
How to Choose the Right Seal?
When choosing a seal, you should consider these three criteria:
Security Level: Do you only want to detect tampering, or do you want to create a physical barrier?
Application Area: What is the diameter and distance of the hole where the seal will be installed?
Environmental Factors: Is resistance to extreme conditions such as temperature or humidity required?